土木工程畢業(yè)設(shè)計外文翻譯1-建筑結(jié)構(gòu)-資料下載頁
2025-01-19 08:33本頁面
【導(dǎo)讀】由于只是為馬匹、馬車和步行建造的，這些馬路通常得不到細心維。護，而且很窄，根本就容納不下汽車的通行。截止到1921年，美國有了共計萬公里的公路。他們中的很多都是采用。麥克亞當（碎石路面正是因為他。們而得名的）所制定的規(guī)范，他們的標準強調(diào)了充分排水的重要性。根本就沒有關(guān)于大小尺寸、重量限制以及商業(yè)標識的國家標準。戰(zhàn)期間，全國的馬路幾乎完全被重型卡車破壞了。當艾森豪威爾將軍——在德國。地域紐帶可顯示出的智慧。第二次世界大戰(zhàn)期間，對貨車和新道路數(shù)量的需求大幅度上升。材料，而且?guī)缀跗渌械墓S半數(shù)以上的產(chǎn)品都由機動車來運送。一些州允許卡車載重。量高達36000磅，但另一些卻限制載重不可以超過7,000磅。且永遠地改變了美國的面貌。高速公路上的事故死亡率僅為美國其他道路的一半（高速公路旅客周。通過提供運輸線路來影響美國的經(jīng)濟，它還促使了很多附屬產(chǎn)業(yè)的產(chǎn)生和發(fā)展，系統(tǒng)被官方正式更名為艾森豪威爾，以紀念其遠見卓識和領(lǐng)導(dǎo)才華。
【正文】 curves engineered for safe turns, and limited access. The death rate on highways is half that of all other . roads ( deaths per 100 million passenger miles pared to deaths per 100 million on all other roads). By opening the North American continent, highways have enabled consumer goods and services to reach people in remote and rural areas of the country, spurred the growth of suburbs, and provided people with greater options in terms of jobs, access to cultural programs, health care, and other benefits. Above all, the interstate system provides individuals with what they enrich most: personal freedom of mobility. The interstate system has been an essential element of the nation39。s economic growth in terms of shipping and job creation: more than 75 percent of the nation39。s freight deliveries arrive by truck. And most products that arrive by rail or air use interstates for the last leg of the journey by vehicle. Not only has the highway system affected the American economy by providing shipping routes, it has led to the growth of spinoff industries 5 like service stations, motels, restaurants, and shopping centres. It has allowed the relocation of manufacturing plants and other industries from urban areas to rural. By the end of the century there was an immense work of paved roads, residential streets, expressways, and freeways built to support millions of vehicles, the high way system was officially renamed for Eisenhower to honor his vision and leadership. The year construction began he said: Together, the united forces of our munication and transportation systems are dynamic elements in the very name we bear United States. Without them, we would be a mere alliance of many separate parts.
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